I understand that. I definitely have plans of flashing the correct firmware version once available. Let's see what happens then.
I bet the lcd used on my phone is the same lcd thay they used for handsets in Malaysia. I wonder how it would affect the firmware & functionality.
What parts are used is not always what's relevant, its how they are setup, you can have the same parts configured a different way to get different results (and for the record, most CV's actually do have very slight part variations, where usually one firmware would fit all.. but..) by flashing a different rom to your phone, your removing any firmware specific tweaks your phone may have had, this could introduce many many different problems, and as for the lag and not being a different display, You'll never know.
Also keep this in mind, even if you flash your original CV firmware back, theres a chance you wont get the exact feel you originally had, its not uncommon for phones(or any high profile electronic) to have small hardware changes between them, most companies will eventually make slightly modified chipsets to either fix known issues, or to slightly cheapen the cost the production, to even patching hardware security holes, those would usually contain a slightly tweaked firmware for the updates. To TL;DR this, flashing is an incredibly stupid thing to do in most cases, unless you manage to dump your original firmware before flashing, theres a good chance you will never get your exact firmware back, which could bite you long term. I don't know about how often Microsoft has made hardware revisions on the phones (well.. i guess its Nokia in this case) but, beware, you may never get the fluidity back. please people, really weigh the cons of doing something this risky. If you have a phone like the t-mobile 925, then id say it could be worth it, but if your phone WILL get the update, is it really worth permanently messing up your phone over?