Yes, there is a way around this streaming problem and that is to upgrade your operating system.
Your 2015 MacBook Pro is capable of running the latest version of macOS 12 Monterey.
If you'd like to get the greatest longevity and compatibility from your computer then you must upgrade from 10.11 El Capitan, an OS that is six (!) generations older.
By not upgrading the OS you haven't taken advantage of any of the many improvements made in the years since that laptop was released, and you've shortened the useful life of the hardware.
You can do yourself a favor and bite the bullet and upgrade to the newest macOS version the computer can run, and then use that Mac productively for a few more years. Or you can pitch this Mac into the bin and spend that $1k on a new one sooner.
Please note that since the release of macOS 10.15 Catalina in late 2019, all software on the Mac must be 64-bit versions; no old 32-bit apps and drivers will work. This includes Microsoft Office, Adobe applications and others. Most if not all of the apps released in the past five years meet this requirement.
Use the free utility Go64 from St. Claire Software to check the 64-bit compatibility of your currently installed apps and know which you'll need to update or replace.
The macOS version you can upgrade to depends on the year your Mac was released.
✅ Check the compatibility of your Mac hardware with newer versions of macOS software:
➡️ macOS 12 Monterey is compatible with the Macs listed here
➡️ macOS 13 Ventura is compatible with the Macs listed here
If your Mac is compatible with the OS upgrade, then upgrade by doing this:
Update macOS on Mac - Apple Support
Or use this Alternative Method–
➡️ Download the macOS upgrade installer app:
Click > macOS 12 Monterey.
Once downloaded, double-click the “Install macOS…” app now found in the Applications folder to begin the upgrade.
Please see > How to download macOS - Apple Support.
