Several threads meander around the solution. Updated and in brief: unless your pointing device's sensor is dirty or dusty (hair, lint, detritus, etc), the most likely cause is a hyper-threading/multi-core issue which Ubisoft has left unresolved, unaddressed and unacknowledged for years now.

If you sell it, support it.

Anyway. To resolve this issue.

On a multi-core Vista system change the short-cut for Myst Revelation to:

Target*: C:\Windows\System32\cmd.exe /C start /affinity 1 myst4.exe
Start in**,***: "C:\Program Files\UBISOFT\Myst IV - Revelation\bin"

* without quotation marks ("), ** WITH quotation marks, *** Location may differ on your machine. Check.

This adjustment will force Myst4 to run on a single core. This will resolve the issue.

If you're having this problem but you're NOT on a multi-core Vista system the issue is most likely hyper-threading. You'll have to check in your BIOS. Disabling hyper-threading seems to resolve this issue.

BE WARNED: disabling hyper-threading may make your system unstable, causing it to hang at start-up, among other things. Read up on risks online.



tags: jumping mouse (warping, strange, crazy, weird, unpredictable, erratic, jumpy, buggy, bug, trouble, troubles, problem, problems, issue, isues, error, cursor, pointing device, pointer, multi, duo, quad, cpu, core, multi core, multi cpu, duo core, quad core, core 2, hyper threading, hyper threader, multicore, multicpu, duocore, quadcore, core2, hyperthreading, hyperthreader)

This message has been edited. Last edited by: SharkMonkey,

In short, having same problem with mouse, however the afore mentioned shortcut modification fix did not work.

To fix on my system I simply started the game, pressed ctrl+alt+del, started task manager, went to processes tab and found myst4.exe, right clicked on it and selected the Affinity option. I then set the process to use the last CPU listed which for me was CPU3.

My system is an Intel Core 2 Quad running on Windows Vista with directX 10.

Perhaps the afore mentioned shortcut fix will work if it is modified to be the last CPU on a given system..?