EVE is a AAA MMO with a development team of a dozen just for the rendering engine. Don't expect the same from a two man team.

(EVE has also gone from the server being the performance issue in fleet battles to "how many? we don't care! We can handle it!" causing the client to be the bottleneck. It's just gotten crazy!)
As far as what you can do, you can try the beta client that is still in testing found here:
viewtopic.php?f=39&t=66937 Note--it is in testing. Most of the crashes and bugs have been worked out, but there are still a few issues that need work before it is considered finished. I've been stable with it for a bit now, but I can't say everyone should be. There are also no graphics options in it, so if you system can't handle the lighting calculations and such, it will not be much better than the current standard client.
You can try one of the custom clients found in the Wizards' Tower. Several have extra options such as minimizing animations, hiding trees, crops, etc, and have some power gamer features that aren't in the standard client. Various ones perform differently, so you might need to try a couple different ones. Ender, Amber, and Purus Pasta are generally trusted by the community.
Opinions expressed in this statement are the authors alone and in no way reflect on the game development values of the actual developers.