+ on the Plug Ins. If I use Sir Audio Tools Standard Clip oversampling @X256 on offline bounce then it's definitely slowed down, as in slower than realtime. Some plug ins oversample, but probably not to the degree that I have SAT set for. Soothe for instance goes up to X4 on the oversampling same with SSL's Bus Compressor V2. Linear Phase EQ typically oversamples. UAD plug ins are slower for offline bounce too. These all add up to slow down the offline bounce. Definitely commit if possible.
