Just tried it, but doesn't look much better. They're are just some parts that have horrible "shaking" like the track preview, or when the race is starting or around the finsih line but then the middle of the course plays just fine (now that "Dual Core" mode is off). I don't know...at least I got the latest version now though! Thanks!
Specs:
Intel Duo Core E8400 @ 3.6 ghz. / Asus P5QL-E / 2 Gig Ram / GeForce 8800GT 512mb PCI-e / Creative Audigy 2 / Win XP Pro SP3 / X360 controllers
The only issues I had were it never ran full speed sometimes it would and then the fps will go low at the same parts of the stage everytime. The newer revisions run the game too choppy and slow to play it takes like almost a minute until I can press start it used to run way better around 3340-3500 revisions
Looks like the game is taking some serious regressions. Along the lines in the past 20-30 revisions Wave Race started running half the speed it did before. Before, (3774ish) the game run fullspeed, though with the forementioned "screen shaking". On top of the speed hit, there's also graphics errors now where there wasn't before - i.e. big black boxes showing up on screen - that's as of about revision 3833 I guess. Doh!
Just an update here: I got another big reduction in shaking by turning OFF the "threading optimizatoin" in the Nvidia panel. So that and turning off "Dual core" mode in Dolphin has made the game alot better, but there still some shaking and pretty heavy at times, and in certain levels. But it looks like this is a threading issue here.
Hope it can get worked out some time. It'll probably happen in the course of other fixes.