[HD2 Windows Mobile 6.5 Q&A, Help & Troubleshooting] Sjuust:
Original values

Since the tweaks didn't work for me and I had to hard reset here are the original settings:

Suitable for ALL ROMs

Change:

HKLM/System/GDI/GLYPHCACHE To: 524288 (change both keys in there)

Original:

limit: 8192

limit0: 73728

This allows for much smoother font rendering, especially when scrolling

Change:

HKLM/System/StorageManager/Filters/fsreplxfilt/ReplStoreCacheSize To: 131072 (Original: 0)

This creates a filesystem 128k sector cache filter, improves data throughput from ROM to RAM (probably) and does seem to improve indexing response and file browsing.

EDIT: file explorer just loaded my "Windows" directory in half a second with this enabled , and the screen does not tear when scrolling the list either any more

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Added 09/2/10

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Change:

HKLM/Drivers/Display/VMMaxHeapSize To: 33554432 (Original: 16777216)

This changes the VideoMemory max heap from 16k to 32k

Change:

HKLM/Drivers/Display/Settings/SMI2 AllocSizeMB To: 32 (Original: 15)

Change:

HKLM/Software/HTC/HTCMenus/EnableVSync To: 0 (Original: 1)

This turns off VSync in sense, making it MUCH smoother. check out the speed of the weather animations now! see that they "judder" less!

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Added 10/2/10

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Updated

Change:

HKLM/Software/HTC/MemoryRequired_ByAP] To: 524288 (Original: 0)

Lets allow SENSE to have some room to breath, shall we?

Change:

HKLM/Software/HTC/HTCAlbum/Require_Activate_Memory To: 20480 (Original: 3072)

makes for faster image loading in album

Change:

HKLM/System/GDI/Drivers/Bpp To: 24 (Original: 16)

Now this IS interesting. I dont know if its just me, but were HTC holding out on us display wise? Changing the BitsPerPixel (colourdepth) from 16 to 24bit, for some reason, whether the display is actually capable of true colour or not, not only MAKES THE SCREEN LOOK BETTER but its also FASTER

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Added 11/2/10

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Change:

HKLM/Software/HTC/HTCScroll/dist_to_pan to 20 (Original: 42)

HKLM/Software/HTC/HTCScrol/flickdown_threshold to 2000 (Original: 4000)

HKLM/Software/HTC/HTCScrol/flickup_threshold to 2000 (Original: 4000)

HKLM/Software/HTC/HTCScrol/friction to 14 (Original: 20)

HKLM/Software/HTC/HTCScrol/init_time_period to 1 (Original: 100)

HKLM/Software/HTC/HTCScrol/velocity_factor to 18000 (Original: 10000)

HKLM/Software/HTC/Manila/HTCScroll.Enable to 1 (Original: 1)

These re-enable HTC scroll mechanism (tip above is updated) and tweak it for shorter, but faster render distances. They make Sense scrolling as smooth as butter

Change:

HKLM/Software/HTC/TouchGL/FilterPixel_Range To: 30 (Original: FilterPixelRange: 10)

Change:

HKLM/Software/HTC/TouchGL/FlickGestureDistance To: 10 (Original: FlickGestureDistanceThreshold: 15)

Change:

HKLM/Software/HTC/TouchGL/GestureEnable To: 50 (Original: 90)

Change:

HKLM/Software/HTC/TouchGL/PinchDistance To: 50 (Original: 100)

These tweak HTC touch driver to change its behavoiur slightly, making gesture distanced much smaller and therefore mor sensitive, but lowering the sensitivity of the filter response, These have the effect of making gesture response much better but reducing the "wiggly screen" and "jumping" cursor to some extent.