With "Store EFB Copies to Texture Only" set to True (the default setting), areas of Excite Truck appear darker than on console. For example, in Sylvan Glen under the Bronze cup, all of the trees appear very dark, nearly black. On console, this does not occur.
Start of the race on Dolphin: https://youtu.be/KjJ-55lwFkE?t=817
Start of the race on Console: https://youtu.be/0W9blwA8AG4?t=699
Setting EFBToTextureEnable = False fixes this issue and does not appear to introduce any performance impacts, so I am recommending that this be disabled by default for this game.
This resolves a few issues with bounding box animations and others. Most noticably, it greatly reduces the bounding box slowdown seen on some NVIDIA cards and also fixes the odd overlay glitches when moving between rooms on the Excess Express.