I feel your pain. Telemetry is arguably the most stressful nursing environment in acute care... high patient complexity with very high workload. But - to borrow a well-known phrase - if you can make it in Telemetry, you can make it anywhere! The skills and knowledge you have acquired in those 3 years have prepared you for just about anything.
As a telemetry veteran, you've had to deal with a wide variety of patients/clinical problems and you are a master at prioritization/time management as well as dealing with all kinds of physicians and 'difficult' families...... My hat's off to you!! If your ultimate goal is to work in a perioperative (OR) job, I would encourage you to look for a job in a 'transition' area that provides more exposure to working with fresh surgical patients. What about SICU? PACU? Day Surgery? You could also look at ambulatory 'diagnostic' areas such as Endo .... assisting with endos would help you learn sterile technique and assisting physicians with procedures.
Best of luck on your career transition