diff --git a/README.md b/README.md
index cd8e208..a0a1923 100644
--- a/README.md
+++ b/README.md
@@ -23,10 +23,6 @@ This includes if you copied a sufficiently large bit of text into the persistent
 The catch is, it wipes your settings. As the settings are always in RAM, and contain just about every *fixable* thing that can break your boot,
  nuking them should bring you to defaults.
 
-It seems to take just under a second for a key event to get through, yet drags are fine.
-I don't know why this is, but I suspect the answer involves the timing of a `computer.pullSignal()` with no timeout.
-If you particularly find performance important, and don't mind the energy costs, you can modify the `init.lua` to make it so that the kernel wakes up every tick.
-
 And finally, just because a system can multitask somewhat on 192K doesn't mean it can do the impossible regarding memory usage.
 Lesson learned: Cleaner design -> Higher memory usage.
 So anyone who wants the design to be made even cleaner should probably reread this paragraph.
diff --git a/code/apps/sys-glacier.lua b/code/apps/sys-glacier.lua
index 68462c8..5bcf14e 100644
--- a/code/apps/sys-glacier.lua
+++ b/code/apps/sys-glacier.lua
@@ -83,6 +83,9 @@ local currentGPUBinding = {}
 -- [gpuAddr] = userCount
 local currentGPUUsers = {}
 
+-- Thanks to Skye for this!
+local keyboardMonCacheK, keyboardMonCacheV = nil
+
 local function announceFreeMonitor(address, except)
  for k, v in pairs(targsRD) do
   if k ~= except then
@@ -238,14 +241,19 @@ donkonitRDProvider(function (pkg, pid, sendSig)
  end}
  return {
   getMonitorByKeyboard = function (kb)
+   if keyboardMonCacheK == kb.address then
+    return keyboardMonCacheV
+   end
    for v in screens.list() do
     for _, v2 in ipairs(v.getKeyboards()) do
      if v2 == kb then
+      keyboardMonCacheK, keyboardMonCacheV = kb.address, v.address
       return v.address
      end
     end
    end
   end,
+
   getClaimable = function ()
    local c = {}
    -- do we have gpu?
@@ -312,6 +320,7 @@ local function rescanDevs()
  monitorPool = {}
  currentGPUBinding = {}
  currentGPUUsers = {}
+ keyboardMonCacheK, keyboardMonCacheV = nil, nil
  local hasGPU = gpus.list()()
  for k, v in pairs(monitorClaims) do
   v[2](true)