diff --git a/src/components/tree/phyloTree/change.js b/src/components/tree/phyloTree/change.js
index 958e58035..8e80a16cb 100644
--- a/src/components/tree/phyloTree/change.js
+++ b/src/components/tree/phyloTree/change.js
@@ -35,8 +35,8 @@ const svgSetters = {
   attrs: {
     ".tip": {
       r: (d) => d.r,
-      cx: (d) => d.xTip,
-      cy: (d) => d.yTip
+      cx: (d) => Math.floor(d.xTip),
+      cy: (d) => Math.floor(d.yTip)
     },
     ".branch": {
     },
diff --git a/src/components/tree/phyloTree/layouts.js b/src/components/tree/phyloTree/layouts.js
index 4dca67b15..a875c7b50 100644
--- a/src/components/tree/phyloTree/layouts.js
+++ b/src/components/tree/phyloTree/layouts.js
@@ -375,7 +375,7 @@ export const mapToScreen = function mapToScreen() {
   // assign the branches as path to each node for the different layouts
   if (this.layout==="clock" || this.layout==="unrooted") {
     this.nodes.forEach((d) => {
-      d.branch = [" M "+d.xBase.toString()+","+d.yBase.toString()+" L "+d.xTip.toString()+","+d.yTip.toString(), ""];
+      d.branch = [" M "+ Math.round(d.xBase).toString()+","+Math.round(d.yBase).toString()+" L "+Math.round(d.xTip).toString()+","+Math.round(d.yTip).toString(), ""];
     });
   } else if (this.layout==="rect") {
     this.nodes.forEach((d) => {
@@ -385,8 +385,8 @@ export const mapToScreen = function mapToScreen() {
       // So we add a tiny amount of jitter (e.g 1/1000px) to the horizontal line (d.branch[0])
       // see https://stackoverflow.com/questions/13223636/svg-gradient-for-perfectly-horizontal-path
       d.branch =[
-        [` M ${d.xBase - stem_offset},${d.yBase} L ${d.xTip},${d.yTip+0.01}`],
-        [` M ${d.xTip},${childrenY[0]} L ${d.xTip},${childrenY[1]}`]
+        [` M ${Math.round(d.xBase - stem_offset)},${Math.round(d.yBase)} L ${Math.round(d.xTip)},${Math.round(d.yTip+0.01)}`],
+        [` M ${Math.round(d.xTip)},${Math.round(childrenY[0])} L ${Math.round(d.xTip)},${Math.round(childrenY[1])}`]
       ];
       if (this.params.confidence) {
         d.confLine =` M ${this.xScale(d.conf[0])},${d.yBase} L ${this.xScale(d.conf[1])},${d.yTip}`;
@@ -399,14 +399,14 @@ export const mapToScreen = function mapToScreen() {
     this.nodes.forEach((d) => {d.cBarEnd = this.yScale(d.yRange[1]);});
     this.nodes.forEach((d, i) => {
       d.branch =[
-        " M "+(d.xBase-stem_offset_radial[i]*Math.sin(d.angle)).toString() +
-        " "+(d.yBase-stem_offset_radial[i]*Math.cos(d.angle)).toString() +
-        " L "+d.xTip.toString()+" "+d.yTip.toString(), ""
+        " M "+Math.round((d.xBase-stem_offset_radial[i]*Math.sin(d.angle))).toString() +
+        " "+Math.round((d.yBase-stem_offset_radial[i]*Math.cos(d.angle))).toString() +
+        " L "+Math.round(d.xTip.toString())+" "+Math.round(d.yTip.toString()), ""
       ];
       if (!d.terminal) {
-        d.branch[1] =[" M "+this.xScale(d.xCBarStart).toString()+" "+this.yScale(d.yCBarStart).toString()+
-        " A "+(this.xScale(d.depth)-this.xScale(offset)).toString()+" "+
-        (this.yScale(d.depth)-this.yScale(offset)).toString()+
+        d.branch[1] =[" M "+Math.round(this.xScale(d.xCBarStart)).toString()+" "+Math.round(this.yScale(d.yCBarStart)).toString()+
+        " A "+Math.round((this.xScale(d.depth)-this.xScale(offset))).toString()+" "+
+        Math.round((this.yScale(d.depth)-this.yScale(offset))).toString()+
         " 0 "+(d.smallBigArc?"1 ":"0 ") +" 1 "+
         " "+this.xScale(d.xCBarEnd).toString()+","+this.yScale(d.yCBarEnd).toString()];
       }
diff --git a/src/components/tree/phyloTree/renderers.js b/src/components/tree/phyloTree/renderers.js
index 4ff63897d..c1629300c 100644
--- a/src/components/tree/phyloTree/renderers.js
+++ b/src/components/tree/phyloTree/renderers.js
@@ -37,7 +37,7 @@ export const render = function render(svg, layout, distance, parameters, callbac
     d.tipStroke = tipStroke[i];
     d.fill = tipFill[i];
     d.visibility = visibility[i];
-    d["stroke-width"] = branchThickness[i];
+    d["stroke-width"] = Math.round(branchThickness[i]);
     d.r = tipRadii ? tipRadii[i] : this.params.tipRadius;
   });
 
@@ -95,6 +95,14 @@ export const drawTips = function drawTips() {
   timerStart("drawTips");
   const params = this.params;
 
+  // Reduce the precision of cx and cy attributes.
+  // The xTip and yTip are full precision Javascript floats
+  // but when stored in the DOM in decimal text format
+  // they bloat the DOM and decimal to hex takes longer.
+  // This only matters when the number of tips is in 4 figures.
+  // So, need to do a Math.floor()
+  // Please test this on a Macbook, Apple does tricks with resolution
+
   if (!("tips" in this.groups)) {
     this.groups.tips = this.svg.append("g").attr("id", "tips");
   }
@@ -105,17 +113,19 @@ export const drawTips = function drawTips() {
     .append("circle")
     .attr("class", "tip")
     .attr("id", (d) => getDomId("tip", d.n.name))
-    .attr("cx", (d) => d.xTip)
-    .attr("cy", (d) => d.yTip)
+    .attr("cx", (d) => Math.floor(d.xTip))
+    .attr("cy", (d) => Math.floor(d.yTip))
     .attr("r", (d) => d.r)
     .on("mouseover", this.callbacks.onTipHover)
     .on("mouseout", this.callbacks.onTipLeave)
     .on("click", this.callbacks.onTipClick)
-    .style("pointer-events", "auto")
-    .style("visibility", (d) => d.visibility === NODE_VISIBLE ? "visible" : "hidden")
+
+    /* .style("pointer-events", "auto") */
+    .style("visibility", (d) => d.visibility === NODE_VISIBLE ? "" : "hidden")
+
     .style("fill", (d) => d.fill || params.tipFill)
     .style("stroke", (d) => d.tipStroke || params.tipStroke)
-    .style("stroke-width", () => params.tipStrokeWidth) /* don't want branch thicknesses applied */
+    /* .style("stroke-width", () => params.tipStrokeWidth)  don't want branch thicknesses applied */
     .style("cursor", "pointer");
 
   timerEnd("drawTips");
@@ -138,7 +148,7 @@ export const getBranchVisibility = (d) => {
   ) {
     return "hidden";
   }
-  return "visible";
+  return "";   /* the css default is "visible" so just clear this setting */
 };
 
 /** Calculate the stroke for a given branch. May return a hex or a `url` referring to
@@ -184,9 +194,9 @@ export const drawBranches = function drawBranches() {
       .attr("id", (d) => getDomId("branchT", d.n.name))
       .attr("d", (d) => d.branch[1])
       .style("stroke", (d) => d.branchStroke || params.branchStroke)
-      .style("stroke-width", (d) => d['stroke-width'] || params.branchStrokeWidth)
+      .style("stroke-width", (d) => Math.round(d['stroke-width'] || params.branchStrokeWidth))
       .style("fill", "none")
-      .style("pointer-events", "auto")
+      /* .style("pointer-events", "auto") */
       .on("mouseover", this.callbacks.onBranchHover)
       .on("mouseout", this.callbacks.onBranchLeave)
       .on("click", this.callbacks.onBranchClick);
@@ -218,8 +228,8 @@ export const drawBranches = function drawBranches() {
       if (!d.branchStroke) return params.branchStroke;
       return strokeForBranch(d, "S");
     })
-    .style("stroke-linecap", "round")
-    .style("stroke-width", (d) => d['stroke-width'] || params.branchStrokeWidth)
+    /* .style("stroke-linecap", "round") */
+    .style("stroke-width", (d) => Math.round(d['stroke-width'] || params.branchStrokeWidth))
     .style("visibility", getBranchVisibility)
     .style("cursor", (d) => d.visibility === NODE_VISIBLE ? "pointer" : "default")
     .style("pointer-events", "auto")
diff --git a/src/components/tree/tree.js b/src/components/tree/tree.js
index b59ade05f..0a8fed7dc 100644
--- a/src/components/tree/tree.js
+++ b/src/components/tree/tree.js
@@ -113,7 +113,7 @@ class Tree extends React.Component {
     return (
       <svg
         id={mainTree ? "MainTree" : "SecondTree"}
-        style={{pointerEvents: "auto", cursor: "default", userSelect: "none"}}
+        style={{pointerEvents: "auto", strokeLinecap: "round", strokeWidth: "1", stroke: "#000", cursor: "default", userSelect: "none"}}
         width={width}
         height={height}
         ref={(c) => {mainTree ? this.domRefs.mainTree = c : this.domRefs.secondTree = c;}}