Software to compliment Windows Defender in Windows 7

Registry cleaning software is not a good idea as it often makes things worse instead of better unless you really understand how to use it properly. It can easily corrupt your Windows installation. Cleaning the registry is not worth the risk. Any professional will tell you it's not a good idea. Besides, it only slows down your pc just a tiny bit and that's only after a very long time.

Gamer Boosters:
Game booster software is nothing but junk. This type of software does not do anything to speed up your pc. It just eye candy that makes you believe it's speeding things up. Same goes for phones btw.

As for Anti-virus I use Bitdefender and it works well plus I have Malewarebytes free version installed to supplement it and I still do manual scans using Windows Defender as another precaution.

Honesty, you should just save up and either build or buy yourself a new pc if you want faster. Your specs seem old and with software now days using gigabytes of ram easily, this is your best solution. 

Also, I forgot to add that Windows 7 is now obsolete and is no longer receiving security updates from Microsoft which makes it more vulnerable. It's another good reason why you really should consider upgrading or buying a new pc with Windows 10.

Thank you, Kalnon
/444Pilot

You're welcome.  I know pc's and pc parts aren't cheap but it really is the best and practically only real solution to making software and games run fast and smooth without issues and it saves you a lot of hair being pulled out.

Even if you cannot afford a new pc, used or refurbished gaming pc's and parts are for sale all over the web on sites like eBay, Facebook or theirs a great phone app I use called OfferUp (they also have a website) where you can often find good cheap deals.  Just make sure to ask the seller questions about the condition and make sure it's fast enough to run FSX or whichever games you want.