Welcome aboard comrade.
What are your specs?
SH3+GWX2.0 runs fine for me (I have a P4 3,2Ghz LGA775; 2Gb RAM DDR400 and a GF 7600GT 256Mb).
The loading time is normal because the game have a lot of ships, aircraft, subs, the campaign upgrades, etc...).
Maybe...Did you upgrade your video drivers?
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