Hi fellow sifu's

i'm driving a persona AT iafm
recently i notice my rpm drop very slow like there's some kind of lagness..
any persona driver encounter before?

example is when i put N and i rev the accelerator, usually it will drop back to below 1 quite fast
but now its laging there.

another example is when i drive up to genting,almost reach near Ria apartment my rpm straight away goes to 8K and my gear wont change..this has happen twice at the same location..now i'm worried that anything goes wrong..i'm not able to travel to work .

appreciate your kind help.

Thank you very much!