Configuring SQL Server repeatedly can take up a lot of time. Here’s a script I use to configure SQL Server instances after installing.
For my purposes, keeping RAM maxed out from the default installation slows down the server when things get busy, so here are my guidelines:
Set this value to 50 if unsure. For .NET C# applications I’ve worked with 43 worked best. Test by starting at 50 and go up/down by 3 to see what values gives the best performance.
Set this number to be same as the number of logical processors on the system, but cap this at 8.