Bolt has always been slow compared to Operamini and this release isn't any better.
Funny, Bold v1.04 and 1.5 are both smoking fast for me. Faster than Opera. I'm talking Wifi though, I only use Bolt for Wifi. If only Bolt had tabs... (i love you use them both, Bolt is just faster. I'm partial to none.)
Also, 1.5 is working great on my phone with OS 5.0.0.238.