Garand

HI! Please would someone help me with these topics. I've completed almost every quest in BG2 and ToB possible and would gladly give advice if someone would help me fix these three problems!

I've just installed the Trilogy and am currently playing BG1, sometimes I "CANNOT INITIATE DIALOGUE, CHARACTER APPEARS BUSY".
I know that if I save game, then load again, it works sometimes. What's wrong with this??

Sometimes when I'm outside, my character members voices have an echo effect. How do I fix this??

My "REST UNTIL FULLY HEALED" option is active, but it usually takes resting at least twice for it to actually work!

Please would someone help!