By skyforbes Essentially removing the "Searching" load from any generation, it relies entirely on what GPT has in it's own Training Data or avaliable to your own chat, memories or uploaded documents.
This basically massacres any questions on recent matters in the last 3 years. Also nicher more specific questions are much shorter, useless, or it will tell you it cannot find it.
It also makes any questions it can answer, still pretty broad and informative for general questions, science or media, very concise and informative broadly.
Web Search off also heavily reduces GPT just making stuff up or drawing on false information. If GPT cannot find something with Web Search immeditably will more often insist that that information or search subject doesn't exist as fact. This was based on a few hours of testing on after noticing some patterns over a couple of months.
Broadly, I do not trust ChatGPT as reference source or as a search engine whether Web search is on or not as the system quirks can still lead to wrong answers or making up stuff based on what it can find.
That said I recommend trying GPT with Web Search off to see if improves your needs. ChatGPT is a terrible search engine for recent events just because of it's core, personality of avoiding confrontation and censorship.