Need help htc desire hd running jellybean r_17 lags and misbehaves

I HAVE BEEN USING MY HTC DESIRE HD FOR BARELY 8 MONTHS AFTER MY HTC ONE WAS STOLEN WHEN I DECIDED TO OPT FOR AN UPGRADE TO 4.1.1 JELLYBEAN USING JELLYBEAN R_17 FROM RANDOMBLAME, AFTER UNLOCKING THE BOOTLOADER AND FLASHING THE ROM ETC, I FINALLY WAS ABLE TO UPGRADE TO 4.1.1
THE INTERFACE WAS AMAZING BUT I DIDN'T REALLY LIKE THE UI PACK AS I EXPECTED A BETTER SET OF CUSTOM ICONS, MY MAJOR CONCERN HOWEVER WAS THE RAM SIZE 594 MB, WHEW BEING USED TO HAVING SO MANY APPS ON MY DEVICE. IT WAS A BIG TURN OFF FOR ME, I SCURRIED ROUND THE NET AND FOUND OUT ABT SWAPPER 2 SINCE RAM EXPANDER REFUSED TO OPEN UP ON MY DEVICE
AFTER SETTING SWAPINESS AND SWAP SIZE TO 60 ANS 256MB RESPECTIVELY TO AID THE SYSTEM,
YET MY PHONE KEEPS LAGGING HEAVILY ESPECIALLY WHEN I TURN ON MY DATA or Wifi ,ALL HELL BREAKS LOOSE, loading apps like bbm and whatsapp takes an agonizing long time and have a tendency to hang my device, most times forcing me to take out the battery and reboot.

i really need any useful advice on what i can possibly do to ensure seamless performance and any other method of improving the RAM, and kinda of wondering why the initial 768MB ram was pruned down to 594mb and is there any way to recover the lost ram?

i need help really feeling downcast here, any other stable capable rom with htc ui interface and blinkfeed suitable for htc desire hd or ace would be nice if suggested.

NB: This is my first post on xda been a ghost member for 3 yrs.

your candid advice and suggestions would be highly appreciated and any errors in my post if pointed out is highy welcome

My buildnumber is cmace-eng 4.1.1 jro)3r eng.randomblame. 20121008.181112 test-keys
jellytime version Jellytime_R17
cpu ARMv7 Processor rev 1(v71)
kernel version 3.0.45jellytime_R17-gd9b8c03randomblameferocious#8Mon oct 8 18:11:56 PDT 2012
baseband version 12.69a.60.29u_26.17.14.11_m
build date= mon oct 8 18:11:45 PDT 2012

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