Make shure you really use the VRam Flag (256), eg:
tex=loadtexture("x.bmp", 1 or 256)
then - don't use 64*16 Textures - it will be scaled internally to 64*64 - which is probably slow. Better use 64*64 from beginning on. Always use Power-of-2-Textures (16*16, 32*32, 64*64, 128*128 ...)
what Card do you use? Some don't support the Flag. About Si's Tweening Code I have no idea.
tex=loadtexture("x.bmp", 1 or 256)
then - don't use 64*16 Textures - it will be scaled internally to 64*64 - which is probably slow. Better use 64*64 from beginning on. Always use Power-of-2-Textures (16*16, 32*32, 64*64, 128*128 ...)
what Card do you use? Some don't support the Flag. About Si's Tweening Code I have no idea.