Slow ElasticSearch Serilog - elasticsearch

Question

My C# dotnet core web application uses serilog with elasticsearch which is configured like the code below. Whenever elastic search server has a problem my server's Http queries slow down to being unsusable. Let's say if elasticsearch is down each query takes 15 seconds or so. I assume each query tries to log the message and waits for the elasticserch server to respond. I understand that I can play with elasticsearch timeout but that is not a solution. Is there a better way not to limit the application performance by the logging method ?
"Serilog": {
"IncludeScopes": true,
"MinimumLevel": {
"Default": "Information",
"Override": {
"Microsoft": "Warning",
"System": "Warning"
}
},
"WriteTo": [
{
"Name": "File",
"Args": {
"path": "....\\log.txt",
"rollingInterval": "Day",
"outputTemplate": "{Timestamp:o} [{Level:u3}] {Message}{NewLine}{Exception}"
}
},
{
"Name": "Elasticsearch",
"Args": {
"nodeUris": "http://localhost:9200",
"typeName": "SomeApp",
"batchPostingLimit": 50,
"restrictedToMinimumLevel": "Information",
"bufferFileSizeLimitBytes": 5242880,
"bufferLogShippingInterval": 5000,
"bufferRetainedInvalidPayloadsLimitBytes": 5000,
"bufferFileCountLimit": 31,
"connectionTimeout": 5,
"queueSizeLimit": "100000",
"autoRegisterTemplate": true,
"overwriteTemplate": false
}
}
],
"Enrich": [
"FromLogContext"
],
"Properties": {
"Application": "SomeApp",
"Environment": "SomeApp.Production"
}
}
The middleware part looks like this
public async Task Invoke(HttpContext context, ILogger logger, ILogContext logContext)
{
context.Request.EnableBuffering();
var stopWatch = new Stopwatch();
stopWatch.Start();
try
{
await _next.Invoke(context);
}
finally
{
stopWatch.Stop();
await LogRequest(context, logger, stopWatch.ElapsedMilliseconds, logContext);
}
}
private async Task LogRequest(HttpContext context, ILogger logger, long elapsedMs, ILogContext logContext){
logger.Information(LogConstants.RequestMessageTemplate, message);
}