Emulator

What's the problem?
Some texture flashing/black in Wii sport Resort, in particular in Table Tennis game.

Dolphin version with the problem (as it appears in the title bar, Ex.: "R
4779" or "R 6403M"):
Still present since old revision. Last test was in r6503
(optional) Dolphin version that does not have the problem:

Operating system and version:
32-bit or 64-bit:
Windows Seven 32bit
Game ID (as it appears in game properties, Ex.: "GZ2P01" or "RSBE01"):
RZTP01
Build command-line (not on Windows):

Was the ISO a plain dump from disc, compressed and/or scrubbed?

Please provide any additional information below.
This problem affects only DX11, no DX9 or OGL.