[MV] AUTOTILE LAG?

Did anything ever come of this?

I ask because now that I finally figured out autotiles, I can't playtest in those maps due to it dropping from 60fps to 20fps.

I tried:

-Reinstalling graphics drivers
-Installing latest DirectX
-Windows 7 64bit AMD Radeon HD 7340
-All power settings to maximum performance
-Turn all system settings down to minimum
-Tried running it as an exe
-Running it in 800x600
-No plugins on
-Latest version of non-steam RPGMMV

Maps without autotiles run perfectly.

Thanks!