You can never have enough memory - so if you are able to up that to 1 or even 2mb it would help - but I would also look at optimizing MySQL and maybe upgrading PHP etc. (not sure what versions you are running) See https://www.ubbdev.com/forum/showflat...5/o/all/fpart/1 for Jeremy's thread on tuning MySQL.
Also is this the only site/script on the server - that might be another problem - are you running any other scripts as part of the site to affect the CPU load. What load are you getting?
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