Hey! I did my best to optimize the game as is, but if you said you seemed to struggle, I can try to look into it a bit more, what did you mean possibly fo voxel weapons and enemys?
Thanks for the report! Going to do some work on the game today, fix some bugs and hopefully release the update with the new models. We also have a trello page, in where you can post suggestions and bugs there as well! https://trello.com/b/KVxTiACn/voxelstein-ue