Large Quote Experience (LQE) in Salesforce CPQ seems to be heading to be enabled by default which for many uses is a good thing! We’ve had lots of clients where their quotes were routinely hitting governor limits. Which is exactly what LQE solves.
So what does LQE actually do? CPQ simply processes all the product and price rules in batches. As an admin you control the batch size which is good. Running a batch size of 1 would make CPQ C-R-A-W-L so maybe not do that. Instead it makes sense to play with the settings to find a good happy medium of numbers between number of quote line rows considered and load times.