I've done a bit of testing today. GPU temp seems unrelated, as the performance started to drop off with the GPU at only 65 degrees. Memory usage, again, didn't even reach 1GB resident, so there doesn't *appear* to be a memory issue, but I'm happy to stand corrected. This issue has persisted through at least 3 versions of Wine (1.1.7 - 1.1.9 - 1.1.14).