I've been searching online to find the answer to my issue and I think I know what it is but just want to verify with experts out there who are familiar with Cisco firewalls.
I have a Pix515e firewall for a company with about 70 users. Yes, I know it's old and EOL but trying to come up with a budget to replace the firewall, routers, along with other needs gets difficult. Anyways, back to my setup.
Pix515e with redundancy
Cisco 2811 router
100Mbps up/down internet
So my issue is when I download large files from major vendors like Apple, Adobe,... or some websites, the download would start out fast but would slow down to a crawl during the download. If I pause and then restart, it would go back up to the fast speed but then slow down again and the cycle continues until it finishes downloading. Good speed is between 4Mbps-10Mbps download. This is on multiple computers, Mac/Windows, multiple browsers. I have tried downloading on a different network and it downloads fine all the way through. Then I downloaded on my network but outside the firewall and it downloaded fine all the way through. The obvious answer is my firewall is the cause but is there another cause other than the firewall or is there a fix that I can try other than buying a new ASA firewall.
Any help is greatly appreciated!